Persistent neural activity and short-term memory

11/17/99


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Table of Contents

Persistent neural activity and short-term memory

Computer architecture

The computer and the brain

Short-term vs. long-term memory

Dorsal and ventral streams

Inferotemporal cortex

“Face cells”

Delayed-match-to-sample task

Cortical areas of macaque

Visual hierarchy

Visual stimuli

Delay activity is selective

Invariance of delay activity

Intervening stimuli

Prefrontal cortex

PPT Slide

PPT Slide

Delayed response task

Memory of object locations

PPT Slide

Memory-related neural activity

Head direction cells

Place versus head direction

Control of eye position

Memory of eye position

Where the memory is stored

Localization criteria

Damaging the memory

Neural coding of eye position

Oculomotor persistent activity

Analog coding

How does a transient stimulus cause a lasting change in neural activity?

Hypothetical mechanisms

Author: Sebastian Seung